Motorola C381P 用户手册
13
Serial Port Access
Serial Port Access
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13
Serial Port Access
The Serial Port RS232 API is incorporated into any J2ME device allowing connection to
the J2ME serial port communication stream.
Opening the port requires the form Connector.open("comm:/name;parameters) where
name is the name of the serial port. (A comma separated list of supported names can be
obtained by calling System.getProperty("serialport.name");)
The API should allow the J2ME application to query for the available device connections
(data cable), as well as the available data speeds.
This API should be in-line with the CLDC javax.microedition.io Version 1.02. In addition,
the following changes must be added over the CLDC standard:
the J2ME serial port communication stream.
Opening the port requires the form Connector.open("comm:/name;parameters) where
name is the name of the serial port. (A comma separated list of supported names can be
obtained by calling System.getProperty("serialport.name");)
The API should allow the J2ME application to query for the available device connections
(data cable), as well as the available data speeds.
This API should be in-line with the CLDC javax.microedition.io Version 1.02. In addition,
the following changes must be added over the CLDC standard:
• Automatic baud rate detection.
• Addition of more parity options; specifically mark and space.
• Support for 1.5 stop bits as a common UART feature.
• Changes to port names, as opposed to the "open by port number option". The
• Addition of more parity options; specifically mark and space.
• Support for 1.5 stop bits as a common UART feature.
• Changes to port names, as opposed to the "open by port number option". The
use of actual port names are more meaningful to the user.
• The mode parameter for Connector.open() is not ignored. A MIDlet should not be
allowed to write a connection which is specified as READ only.